I have only seen Mitchell bowl once in the last 2 years (about 2 Months ago), and he seemed to be getting it through at a crisp pace and troubled all batsmen. He seems to be really hit or miss, takes heaps of wickets for not many or go for 100 off 22 overs. He is still only 25-26, so Im hoping if he can get a good couple of seasons injury free he could come good. You could probably chuck Sherlock into the same boat, started with a hiss and a raw but got injurred for about 2-3 seasons, and are slowly coming back now.
Bennet is a tough one, I really dont like his action, Im not sure if his body will hold up for a long career unfortunetly. Probably needs a re jig to takes some pressure off his back and front leg.
I like the look of Boam and Neesham, different players with similar roles, Boam the nuggety middle order batter and solid medium pacer and Neesham a aggressive middle order batter and a bit of a wicket taking Medium Pacer.